Solve
-An Open-Topped Box Has a Square Base and a Height

Multiple Choice

Solve.
-An open-topped box has a square base and a height of 15 inches. If each of the bottom edges of the box has lengt inches, find the amount of material needed to construct the box. Write the answer in factored form.

A) $x ( x + 30 ) s q$ in.
B) $\left( x ^ { 2 } + 60 \right) s q$ in.
C) $x ( x + 60 )$ sq in.
D) $x ( x + 15 ) s q$ in.